Extended Data Fig. 5: Scanning electron microscopy images of adhesives after being pulled to failure.
From: Sustainably sourced components to generate high-strength adhesives
a, A commercial epoxy shows clean fracture and distinct regions of adhesive versus substrate. b, The soy-mal-tan material shows more complex failure, with stress lines, indicative of ductile behavior. Both substrates were polished steel. The soy-mal-tan adhesive was cured at 180 °C for 6 h.
